| Numerical Investigation of Interrupted Microchannel Heat Sink with Multi-Step Rectangular Ribs in the Transverse Microchambers |
| کد مقاله : 1374-ISME2024 |
| نویسندگان |
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Hossein Karbaseyan1، Abas Ramiar *2، Amirhosein Ghasemi3 1BSc student of Mechanical Engineering 2Associated professor 3Senior research associate at bioMEMS and microfluidics Lab |
| چکیده مقاله |
| In this study, the performance of multi-step rectangular ribs and their base surface areas in microchannel heat sinks was investigated numerically. To save time and reduce costs, a section of the microchannel was analyzed using the symmetry method. The results indicated that double-step ribs outperformed other step configurations, showing a 14% increase in the thermal enhancement factor, with the Nusselt number and friction factor each increasing by 27.3% and 41%, respectively. The friction factor initially increased due to vortices generated by the steps, but as the Reynolds number increased, the influence of vortices on the friction factor diminished. Additionally, it was concluded that a larger surface area for the top step of the double-step rib resulted in higher thermal enhancement factors. The configuration with A2=1.5A demonstrated a 25% increase in the thermal enhancement factor, with the Nusselt number and friction factor each increasing by 42% and 51%, respectively. These findings highlight the potential of double-step ribs with larger top step surface areas for optimal performance in thermal management systems. |
| کلیدواژه ها |
| Heat transfer, Microchannel heat sink, multi-step rib, Numerical simulation |
| وضعیت: پذیرفته شده برای ارائه شفاهی |